Given the circuit below for a FET feedback amplifier, if V = 1 mV, R1 = 10 k2, the open-loop gain A = -1000, and thefeedback gain ß= -10. Answer the following questions:%3!VpoRpCpR21) Find the value of R2.2) Find the voltage V.3) Mention one advantage and one disadvantage of adding a feedback loop to an amplifier.+ I

Given data: A0=-1000β=Avf=-10Vi=1 mV

Given the circuit below for a FET feedback amplifier, if V =1 mV, R1= 10 k2, the open-loop gain A = -1000, and the feedback gain B= -10. Answer the following questions: Rp 1) Find the value of R2. 2) Find the voltage V. 3) Mention one advantage and one disadvantage of adding a feedback loop to an amplifier.

Given the circuit below for a FET feedback amplifier, if V =1 mV, R1= 10 k2, the open-loop gain A = -1000, and the feedback gain B= -10. Answer the following questions: Rp 1) Find the value of R2. 2) Find the voltage V. 3) Mention one advantage and one disadvantage of adding a feedback loop to an amplifier.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

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2-) The AC equivalent of a feedback amplifier circuit is given in the figure on the right. (Hfe100, Va = ∞, Ic1 = 15 mA, Ic2 = 5mA and Ic3 = 5 mA) a) State the type of feedback used in the circuit, explaining the reason. b) Draw the small signal equivalent of the amplifier circuit. c) Calculate the value of β for the feedback by drawing the β circuit. d) Find the Avf = Vo / Vs closed loop gain of this circuit. e) Find the Rif and Rof values.
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An amplifier has an open-loop gain of 92 dB, Rid = 75 kΩ, and Ro = 1400Ω. The amplifier is used in a feedback amplifier configuration with a resistive feedback network. (a) What is the largest value of current gain that can be achieved with this feedback amplifier? (b) What is the largest valuetransconductance that can be achieved with this feedback amplifier?
A. If the forward gain is 5 and feedback gain is 1, determine the close-loop gain of a negative feedback amplifier. answer: B. For a Wien-bridge oscillator (as presented in the lecture), if the feedback resistor has a value of 10-kohm, determine the value of Ri (in kilo-ohm). answer:
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Given in the figure is a two-stage amplifier design that employs negative feedback. Answer the following questions. Use the notation (R1 + R2 + ... + Rn) for series resistors and (R1 || R2 || ... || Rn) for parallel resistors for clarity and ease. Assume that the transistors are already biased properly in the saturation region and ro1 = ro2 → ∞. Also assume that the capacitors have infinite capacitance. 1.) Find the expression for the open loop gain Av 2.) Derive the resistance Rin which is the resistance that can be seen at the input port of the amplifier
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An op-amp-based noninverting ampliﬁer has R1 = 15 kΩ, R2 = 30 kΩ, and RL = 20 kΩ. The op amp has an open-loop gain of 94dB , an input resistance of 30 kΩ, and an output resistance of 5 kΩ. Find the loop gain, ideal voltage gain, actual voltage gain, input resistance , and output resistance for the feedback ampliﬁer.
Consider the following statement: In feedback amplifiers, concerning the connections between the direct amplifiers and the feedbacks network, a shunt connectiın at the input part servers to set an increased versiın of the input impedance of the direct amplifier, whereas again a shunt connection at the output part services to set a decreased version of the output imdepance of direct amplifier. Explain what is wrong with the statement above by drawing representative circuit diagrams and outlining the necessary calculations.